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Elevator safety protection control method, device and system

A technology of safety protection and control method, which is applied in the field of elevator control, can solve the problem of low safety of elevator star closure, achieve the effect of improving safety and avoiding current shock

Active Publication Date: 2018-08-10
HITACHI ELEVATOR CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Based on this, it is necessary to provide an elevator safety protection control method, device and system for the problem of low safety of elevator star closure in the traditional elevator safety protection process.

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  • Elevator safety protection control method, device and system
  • Elevator safety protection control method, device and system

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Embodiment Construction

[0045] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiment of the invention is shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more related listed items....

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Abstract

The invention relates to an elevator safety protection control method, device and equipment. The elevator safety protection control method can comprises the following steps that when an elevator performs star-sealing braking, first star-sealing protection signals and second star-sealing protection signals are generated; the first star-sealing protection signals are transmitted to all upper bridgearm switch pipes of an inverter correspondingly; the first star-sealing protection signals are used for indicating all the upper bridge arm switch pipes to cut off a power-supply power source of a motor; the second star-sealing protection signals are transmitted to all lower bridge arm switch pipes of the inverter according to a predetermined sequence; the predetermined sequence is a phase coincidence sequence of the current phase of the motor and the magnetic-pole phases of the lower bridge arm switch pipes during closing; and the second star-sealing protection signals are used for indicatingall the lower bridge arm switch pipes to restrain the unbalanced electric current of the motor at the beginning of star sealing. By means of the elevator safety protection control method, cutting offthe power-supply power source of the motor can be realized, overlarge current shock at the beginning of star sealing is avoided at the same time, star-sealing braking is performed with maximum braking force, and the safety of the elevator is effectively improved.

Description

Technical field [0001] The invention relates to the technical field of elevator control, in particular to an elevator safety protection control method, device and system. Background technique [0002] With the development of elevator technology, the safety requirements of elevators are getting higher and higher. In order to ensure that the elevator can effectively decelerate or limit the speed of the elevator, the three-phase input of the motor is usually short-circuited, and the permanent magnet of the permanent magnet synchronous motor is used. The braking force slows down the elevator or limits the speed of the elevator (ie, "star-sealing technology"). [0003] In the process of implementation, the inventor found that the traditional technology has at least the following problems: in the traditional elevator sealing safety protection process, there is a large unbalanced current, and it is difficult to provide a large braking force while reducing the unbalanced current. Reduce t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66B1/06B66B1/34B66B5/04B66B5/02
CPCB66B1/06B66B1/3423B66B5/02B66B5/044
Inventor 郭威郭志海魏明栋
Owner HITACHI ELEVATOR CHINA
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